使用regexp_replace格式:
regexp_replace(address,"正则表达式","替代字符")
(1)匹配所有字符:
select regexp_replace(address, '.*', '***') from table;
(2)匹配指定字符:
select regexp_replace('2016-06-05', '-', '') from table;
(3)匹配特殊字符(换行符):
select regexp_replace(name,'\\\\n','') from table;